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Your search keyword '"S. G. Chigarev"' showing total 3 results
Start Over Author "S. G. Chigarev" Publisher allerton press
3 results on '"S. G. Chigarev"'

2. Effect of a Potential Jump in a Magnetic Junction upon Spin Injection by an Electric Current on the Effectiveness of Electromagnetic Wave Radiation

Author

S. G. Chigarev and E. A. Vilkov

Subjects
010302 applied physics, Imagination, Materials science, Condensed matter physics, 010308 nuclear & particles physics, media_common.quotation_subject, Hadron, Non-blocking I/O, General Physics and Astronomy, Radiation, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, 01 natural sciences, Electromagnetic radiation, Condensed Matter::Superconductivity, 0103 physical sciences, Jump, Condensed Matter::Strongly Correlated Electrons, Electric current, media_common, Fermi Gamma-ray Space Telescope
Abstract

Results are presented from studying the effect a jump in potential has on the modes of operation of different magnetic junctions, including the Ni/NiO/Fe tunnel magnetic junction. The difference between the effectiveness of radiation in them is explained by the effect of jumps in potential have on the formation of Fermi quasi-levels in spin-energy sub-bands.

Published
2020

3. Spin-injection terahertz radiation in bilayer epitaxial magnetic planar nanostructures

Author

S. G. Chigarev, I. V. Malikov, E. M. Epstein, P. E. Zilberman, and Gennady M. Mikhailov

Subjects
Materials science, Spins, business.industry, Terahertz radiation, Bilayer, Physics::Optics, General Physics and Astronomy, Population inversion, Condensed Matter::Materials Science, Wavelength, Planar, Ferromagnetism, Optoelectronics, Current (fluid), business
Abstract

The generation of electromagnetic THz waves by a current is experimentally investigated in planar structures comprised of two ferromagnetic films. When the films come into contact with a thin copper rod, the current is applied to both layers. The first layer, which plays the role of an injector, polarizes the spins of the current carriers. In the second working layer, the conditions are created for spin population inversion and the generation of THz waves. At a current of 350 mA, the radiation wavelength is 16.4 THz and a power of 10 mW is reached at room temperature.

Published
2014

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